fix: validate selected items instead of search

[KaelWD]

fixes #15142

<template>
  <v-app>
    <v-container>
      <v-form ref="form" @submit.prevent>
        <v-text-field v-model="text" label="text field" :rules="rules" />
        <v-select v-model="select" label="select" :items="items" multiple :rules="rules" />
        <v-autocomplete v-model="autocomplete" label="autocomplete" :items="items" multiple :rules="rules" />
        <v-combobox v-model="combobox" label="combobox" :items="items" multiple :rules="rules" />

        <v-btn type="submit">Validate</v-btn>
        <v-btn type="reset">Reset</v-btn>
        <v-btn @click="resetValidation">Reset validation</v-btn>
      </v-form>

      <pre>{{ {
        text,
        select,
        autocomplete,
        combobox,
      } }}</pre>
    </v-container>
  </v-app>
</template>

<script setup>
  import { computed, ref, watch } from 'vue'

  const form = ref()
  const items = Array.from({ length: 5 }, (_, i) => `Item ${i + 1}`)
  const rules = [
    v => {
      console.log(v)
      return true
    },
  ]

  const text = ref()
  const select = ref()
  const autocomplete = ref()
  const combobox = ref()

  function resetValidation () {
    form.value?.resetValidation()
  }
</script>